/* Calculate, from pixels in expose, the time interval to get data */
get_time_from_pixels(expose->area.x, expose->area.width,
control_flow_data->Drawing_Area_Info.width,
&control_flow_data->Begin_Time, &control_flow_data->End_Time,
/* Calculate, from pixels in expose, the time interval to get data */
get_time_from_pixels(expose->area.x, expose->area.width,
control_flow_data->Drawing_Area_Info.width,
&control_flow_data->Begin_Time, &control_flow_data->End_Time,